Rhipsalis micrantha ssp. kirbergii leaf detail on white background.

Rhipsalis micrantha ssp. kirbergii potted plant in nursery pot on white background.

Cactaceae

Rhipsalis micrantha f. kirbergii

Q: Is 'Kirbergii' still treated separately from Rhipsalis micrantha?

Usually no. Current references fold it into Rhipsalis micrantha , which is why labels vary.

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Rhipsalis micrantha f. kirbergii has long pale-green hanging stems with four to six pronounced ribs running along the mature branches. Branches develop towards the ends of older stems and create several ribbed strands.

Read full guide to Rhipsalis micrantha f. kirbergii

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XL Hanging pot Ø 19 cm · approx. 60 cm long Sold out

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Sizes are approximate. Height is measured from the bottom of the pot to the top of the plant; diameter at the widest point.

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Care at a glance

Rhipsalis micrantha f. kirbergii

Light

Bright indirect • approx. 10,000–20,000 lux

Watering

Water when ~20–35% dry

Substrate

Airy + fast-draining • Light moisture buffer • Bark-based • Medium-chunky

Temperature

Ideal: 18–24 °C • Avoid below: 10 °C

Humidity

Elevated 50–60%

Growth habit

Trailing epiphytic cactus.

Support

optional

Growth speed

Average

Cultivated size guide

Trail length: 100 cm • Spread: 60 cm

Toxicity & safety

Non-toxic

Origin & habitat

Cultivated kirbergii form associated with western Ecuador; Rhipsalis micrantha native from Costa Rica to Peru

Outdoor growing

Outside from 15 °C · sheltered from wind and rain

How to read these values

These care values give practical guidance for growing the plant. Adjust care for pot size, substrate, temperature and how quickly the substrate dries.

For more detail, read the full product description or visit our Plant Care Guides.

Light: level and approximate lux at leaf level.
Watering: “% dry” shows how far the substrate should dry before watering again.
Substrate: structure, drainage, moisture retention, base material and particle size.
Temperature: “Ideal” shows the preferred range; “Avoid below” marks the cold-stress threshold.
Humidity: target range; steady conditions usually matter more than exact numbers.

Growth habit: how the plant grows, such as upright, climbing, trailing, clumping or rosette-forming.
Support: whether a stake, pole or trellis is needed, optional or unnecessary.
Growth speed: expected pace under suitable growing conditions; use as a guide, not a promise.

Cultivated size guide: approximate dimensions for an established plant in the stated growing context. Height is measured upwards from the growing surface; foliage height excludes flower stems. Trailing length follows a stem, while foliage drop is the vertical distance from the crown to the lowest leaf tips. Spread is the width of the leafy plant or crown, not an individual leaf. Flowering height includes the flower stems. A container guide applies to pot-grown plants; an in-ground guide applies to plants rooted in the ground. Size also depends on age, conditions, pot space and training.

These figures do not describe the size supplied and are not fixed upper limits.

Toxicity & safety: irritation, toxicity or physical hazards such as spines or bristles.
Origin & habitat: native range, hybrid background or typical habitat where relevant.
Outdoor growing: when a potted indoor plant can be placed outside and what outdoor protection it needs.

Rhipsalis micrantha f. kirbergii

Rhipsalis micrantha f. kirbergii develops long stems with four to six pronounced ribs. New growth lengthens first, then branches form toward the outer parts of older stems.

As the older stems hang, those outer branches create several ribbed strands from the same main stem.

Plant growth and features of Rhipsalis micrantha f. kirbergii

Long pale-green stems commonly carry four or five narrow ribs.
Some stem sections develop six clear angles.
Branches divide near their ends as the plant lengthens.
Small whitish flowers can sit along the sides of mature stems.
Mature fruit can be pale with a light reddish tint.

Origin & background

Cultivated identity and natural range of Rhipsalis micrantha f. kirbergii

The kirbergii name remains in cultivation for material associated with western Ecuador.

Rhipsalis micrantha ranges from Costa Rica through the northern Andes to Peru and grows in wet tropical and montane forest.

Plant care

Indoor growing guide for Rhipsalis micrantha f. kirbergii

Light and hanging space: Keep the long ribbed stems in bright indirect light with plenty of open space around the hanging growth. A little morning or evening sun is suitable.

Temperature and humidity: Temperatures of about 18–24 °C suit routine growth; extended cold below 10 °C should be avoided. Maintain roughly 40–50% humidity.

Watering: Water thoroughly after the surface has dried and the pot has become lighter, then allow the pot to drain fully.

Potting mix: Use a loose bark-based mix with pumice or perlite so water drains readily and air reaches the roots.

Feeding: Feed lightly while new ribbed stems are growing, then reduce feeding when growth slows.

Support. Give the stems room to trail from a hanging container or shelf, with a hoop or trellis available if you want to guide them upward.

Repotting: Repot when roots become crowded or the mix becomes dense.

Propagation: Firm, healthy ribbed sections can be used as cuttings. Start them in an airy mix and keep it lightly moist.

Issues & solutions

Problem signs and solutions for Rhipsalis micrantha f. kirbergii

The ribs become thin and the stem looks pinched: A pinched look between the ribs often appears when the stems have lost water. If the mix is dry and the pot is light, water thoroughly.
One rib darkens and softness spreads around the stem: Darkening that spreads from one rib with soft tissue can indicate rot. Use a clean tool to remove every soft or decaying section back to firm healthy tissue and discard the rot. Check the roots and potting mix as well; repot only if the roots are affected or the potting mix stays wet too long or has become dense.
Cottony white insects collect in the grooves between ribs: The grooves between ribs can hide mealybugs. Isolate the plant, remove visible insects, and use a product labelled for mealybugs on ornamental plants. Follow the label, including any repeat treatment.
The raised edges become pale and crisp: Pale, crisp edges usually point to excessive direct sun. Filter the light or move the plant back from the window, then reintroduce gentler sun gradually.

Safety

Rhipsalis micrantha ssp. kirbergii is non-toxic to cats and dogs

This plant is non-toxic to cats and dogs.
Its effects on people are unclear, so keep it away from young children who may chew it.
Eating a large amount can still cause an upset stomach. Seek medical or veterinary advice if symptoms continue.

Names & etymology

Rhipsalis micrantha: name and meaning

Rhipsalis comes from Greek rhips, wickerwork or basket weave. Rhipsalis refers to wickerwork and micrantha means small-flowered.

Joseph Gaertner established the genus Rhipsalis in 1788 in De Fructibus et Seminibus Plantarum, volume 1, page 137.

Karl Sigismund Kunth first described it as Cactus micranthus in 1823 in Nova Genera et Species Plantarum, volume 6, page 65. Augustin Pyramus de Candolle later placed it in Rhipsalis as Rhipsalis micrantha in 1828 in Prodromus Systematis Naturalis Regni Vegetabilis, volume 3, page 476.

Plant names, growth habits, natural habitats and indoor care guidance are checked against trusted botanical, habitat and horticultural references before publication.View our plant care resources and references.